A Seattle man previously investigated for a similar incident has been charged with drugging and raping a woman on New Year’s Eve.

King County prosecutors contend Mamadou S. Diallo raped a 21-year-old woman after meeting her at a Capitol Hill bar. According to prosecutors, Diallo, 30, was investigated but never charged in a nearly identical assault two years earlier.

Seattle police were called to Diallo’s University District apartment at 3:30 a.m. on Dec. 31 following a report of a woman screaming for help. According to charging papers, officers arrived to find the woman and Diallo in the apartment.

Speaking with police, the woman said she had been drinking at the Baltic Room hours before when Diallo approached her and bought her a single whiskey shot. That drink, only her fourth of the evening, was the last thing she could recall before waking in Diallo’s apartment hours later.

An acquaintance confirmed to police that the woman had been drinking only lightly during the evening, a Seattle detective told the court. He said he attempted to intervene as Diallo guided the woman out of the bar, going so far as to bang his hand on the window of a taxi she and Diallo had gotten into.

“He began asking her what was going on,” the detective said in court papers. “(She) had a blank expression and the taxi drove off.”

Speaking with police, Diallo denied raping the woman.

According to charging papers, though, Diallo’s neighbor told police he heard sobbing coming from Diallo’s apartment. He called 911 after hearing the woman ask Diallo to “stop it” and let her go.

Writing the court, Senior Deputy Prosecutor Lisa Johnson said Diallo appears to have been the subject of a 2011 investigation by Seattle police.

“Although he denies being the same person, it appears from Seattle Police Department records that the defendant is the same person that was investigated in 2011 for a strikingly similar incident in which a woman reported being drugged and sexually assaulted by a person of the same name, same date of birth … and same physical description, after meeting him in a bar,” Johnson said in charging papers.

Diallo has been charged with second-degree rape. He remains jailed on $250,000 bail.